Sirius 12.9 Grade Socket Head Cap Screws UNC

This variant of the Sirius 12.9 Grade Socket Head Cap Screws is sized at 1/4 UNC diameter x 1/2" length, supplied in a pack of 200. A versatile small-diameter fastener suitable for general engineering, instrumentation and light mechanical assemblies requiring reliable UNC thread engagement. Features and Benefits: • Grade 12.9 high tensile alloy steel construction • UNC thread for secure, compatible fastening • Internal hex socket head for high torque drive • Compact head prof